Safety managements of the linear IFMIF/EVEDA prototype accelerator

• Safety management is needed to secure the personnel safety from high dose rate.
• The management of access to the accelerator vault is mainly performed by PPS.
• The operation management is needed for safety during Injector and RFQ commissioning.
• Pulse Duty Management system is newly developed for Injector commissioning for operation management.
• PDM system is useful to reduce the radioactivation of equipment and the radiation exposure during and after beam operation.

On the Linear IFMIF/EVEDA Prototype Accelerator (LIPAc), the validation up to 9 MeV deuteron beam with 125 mA continuous wave is planned in Rokkasho, Aomori, Japan. Since the deuteron beam power exceeds 1 MW, safety issue related to γ-ray and neutron production is critical. To establish the safety management indispensable to reduce radiation exposure for personnel and activation of accelerator equipment, Personnel Protection System (PPS) of LIPAc control system, which works together with Radiation Monitoring System and Access Control System, was developed for LIPAc. The management of access to the accelerator vault by PPS and the beam duty management of PPS are presented in details.